JPS6333508Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to electronic equipment such as audio equipment, and is particularly directed to easily establishing electrical continuity between a jack and a metal panel.

In electronic equipment, especially audio equipment, metal panels and the like are grounded to the chassis for noise and static electricity countermeasures.

Conventionally, this type of grounding method involves soldering the wire from the ground terminal to a chassis, etc., or attaching a lip to a metal display name plate, decorative plate, etc. installed on the mounting plate of the jack or near the mounting part. Direct grounding was done using a screw jack with a screw on the outer periphery, but wiring was difficult if the chassis was made of a material such as aluminum that was almost impossible to solder. Further, in the case of a screw-on jack, the jack itself has a complicated structure and is expensive, and the installation requires many man-hours, resulting in high costs.

Therefore, this invention was devised to eliminate the drawbacks of the conventional method, and a conductive wire having elasticity is pressed against the metal panel on the mounting side of the jack to establish continuity with the ground on the jack side and ground it. It is something.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 indicates a small tape recorder as an electronic device, and the present invention is applied to this jack device 2.

2 to 4 show an embodiment of the present invention, in which a jack 3 constituting a jack device 2 is covered with an outer casing 4 made of a resin material, and a printed wiring board 5 is provided with terminals. are fixed by soldering to the wiring pattern 6 and the ground pattern 7, respectively. Also, the outer case body 4 has a jack 3.
The insertion port 3 is located close to the plug insertion port 3a.
A groove 4a is formed so as to surround a, and an elastic conductive wire 8 is inserted into this groove 4a. The first half of this conductive wire 8 is connected to the groove 4 of the outer casing 4.
The rear half 8 of the U-shaped portion 8a has a U-shaped portion 8a and an elastic rising portion 8b that are inserted into the U-shaped portion 8a and serve as the held portion.
a' is bent at a substantially right angle, and the conductive wire 8 is positioned and held by inserting the front half of the U-shaped portion 8a into the groove 4a of the outer case 4, The rear half 8a' is brought into contact with the ground pattern 7 of the printed wiring board 5 and soldered with solder a. By this soldering, the conductive wire 8 is connected to the ground terminal of the jack 3 via the ground pattern 7, and is also positioned and fixed to the printed wiring board 5. It is established in the vicinity.

The jack device 2 configured in this way is attached to the aircraft 1.
The elastic rising portion 8b of the conductive wire 8 is placed facing the metal panel 10 of the jacket mounting portion of the jack 3, and is pressed and fixed so that the plug insertion opening 3a of the jack 3 faces the through hole 10a. 1
0, the ground terminal of the jack 3 and the metal panel 10 are electrically connected, and the jack 3 is grounded to the metal panel 10.

5 and 6 show another embodiment of the present invention, in which the jack device 2 has a plug insertion opening 3 in the outer casing 4 of the jack 3.
A cylindrical part 4a' is formed to cover the peripheral surface side of a.
Further, the conductive wire 8 is bent into a U-shape to form a spiral portion 8c at its front end that is fitted into the cylindrical portion 4a' of the outer case 4, and an elastic rising portion 8d continuous to the tip thereof. has been formed. On the other hand, the printed wiring board 5 to which the jack 3 is fixed has a through hole 5a located above the ground pattern 7 and into which the rear bent portion 8e of the conductive wire 8 is inserted.

To assemble the jack device 2 in this example, first, the conductive wire 8 is held by fitting the spiral portion 8c at the front end into the cylindrical portion 4a' of the outer casing 4, and then holding the conductive wire 8 at the bent portion 8e at the rear end. is inserted into the through hole 5a of the printed wiring board 5 and temporarily fixed, and after positioning, the portion that contacts the ground pattern 7 is soldered with solder a. By this soldering, the conductive wire 8 is connected to the ground terminal of the jack 3 via the ground pattern 7.

Therefore, similarly to the above-described embodiment, the jack device 2 is placed opposite the metal panel 10, and is pressed and fixed so that the plug insertion opening 3a of the jack 3 faces the through hole 10a. The rising portion 8d is in contact with the metal panel 10,
The ground terminal of the jack 3 and the metal panel 10 are electrically connected, and the jack 3 is grounded to the metal panel 10.

In both examples, the surface of the metal panel 10 where the conductive wire 8 comes into contact, that is, the peripheral surface 10a' of the through hole 10a where the plug insertion opening 3a of the jack 3 is exposed, is stripped of the oxide film, etc. on the surface. Reliable conduction can be achieved by exposing the bare metal.

As described above, the present invention allows a jack placed on a printed wiring board to hold and position an elastic conductive wire at the held portion thereof, and also solder the required portions of the wire to the ground pattern of the printed wiring board. The jack is attached to a metal panel that cannot be soldered, and the jack is configured so that the elastic rising part formed at the free end comes into contact with a metal panel fixed opposite to the jack to ground the jack. Good conduction is possible and reliable earthing can be achieved without the need for complicated processing such as providing screws, and without the risk of poor conduction due to loosening of the screws. Furthermore, the jack can be electrically connected to the equipment housing side at the same time as it is assembled into the equipment housing, and even if there are variations in the distance between the metal panel of the housing and the printed circuit board that serves as the jack's ground terminal, the conductive wire Since the conductive state can be maintained by the elastic rising part of the connector, it is necessary to adjust the distance between the metal enclosure panel and the printed circuit board, which differs slightly for each device, or to take special measures to keep it within the allowable specified value. This reduces the number of man-hours required for ground installation, and since the conductive wire is held and positioned on the jack side in advance during soldering to the ground pattern between printed circuit boards, the soldering work can be done easily and reliably, significantly improving work efficiency. The construction of the conductive member of the jack is extremely simple, resulting in low costs.Also, since the conductive wire serving as the conductive member of the jack is not fixed to the equipment case side, work efficiency during repairs is improved. has.

Although the above-described embodiment is applied to a small tape recorder, it goes without saying that the present invention can be similarly applied to other electronic devices such as radio receivers and stereo equipment. In addition, the present invention can be applied not only to providing electrical continuity between an exterior component such as a mounting panel and a jack, but also to providing electrical continuity between an exterior component and a circuit near the jack. In this case, the jack is used to position and fix conductive wires. Will be using it.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a small tape recorder as an example of electronic equipment to which the present invention is applied, Fig. 2 is a sectional view of main parts, Fig. 3 is an exploded perspective view of an example of a jack device, and Fig. 4 is the same. FIG. 5 is an exploded perspective view of another example of the jack device; FIG. 6 is a perspective view of a portion of the jack device attached to the metal panel portion; FIG. 5 is an exploded perspective view of another example of the jack device; It is. In the figure, 2 is a jack device, 3 is a jack, 4 is an outer case, 5 is a printed wiring board, 7 is a ground pattern, 8 is a conductive wire, and 10 is a metal panel.

Claims (1)

[Scope of Claim for Utility Model Registration] A jack device which is arranged to be connected to a printed wiring board and has a plug insertion opening, and which is bent into a substantially U-shape and is connected to the ground pattern of the printed wiring board at the bent part by soldering. an elastic conductive wire having an elastic rising portion formed on one side of both free ends and a held portion held by the jack device on at least one of the free ends; and an opening. and a metal panel provided with a metal panel, and by fixing the jack device and the metal panel facing each other so that the plug insertion port faces the opening, the elastic rising portion of the conductive wire can be attached to the metal panel. An electronic device characterized by being in contact with a panel.